Answer:
a) contain DNA combined from two different organisms
This demonstrates a competitive relationship, as they are competing for food.
Answer:
True
Explanation:
During the evolution of eukaryotic cells, the complexity of size and their functions increased, so that a proportional increase in the surface of the <u>cell membrane</u> would be necessary, making it possible for the cell to perform several functions at the same time.
Through differentiations of the structures, it was possible to develop intracellular membranes in the form of organelles capable of performing various functions at the same time, such as cellular respiration and digestion.
Answer: Natural selection can be defined as the differential survival and reproduction of members of the population of a species that have suitable traits to survive in a population of species.
Explanation:
The punctuated changes in the population of species have been found inordinately faster in the geological time scale, but changes per-generation have been relatively slow. Also, the rate of evolution in such a population is also slow. The punctuated changes in the population are because of evolution but the per-generation changes are the outcomes of the natural selection, in which only the beneficial traits are passed from one generation to another.
Answer: D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.
Hypothesis A and B both are suggesting that caffeine intake is related to higher heart rate. But hypothesis B is proving it more certainly by suggesting the affects of caffeine intake on heart rate. As, heart rate of most people will be higher 30 minutes after they drink a cup of coffee is testifying the fact, that higher heart rate is related with caffeine intake.
Therefore, hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.
